It also has one freakish feature: there are seven rows of teeth. 它还有一个很特别的特征：它有7排齿列。 It is unlike any other creature we know of. 这与我们所知的任何动物都不一样 This suggests it must be one of the hos...
If we look at the tetrapod we have the pit now gone altogether 我们再看一下四足动物，凹陷已经彻底消失 and here's that lower blood vessel hole there in the tetrapod, 这里有个四足动物颚骨的下行血管出口 so in this res...
He named the jaw livoniana and to prove it really was a transitional form 他将这块颚骨化石命名为文塔螈，为了证明它的确是过渡型物种 he ran it through something called a cladistic analysis. 他用所谓的谱系分支分析对...
When you see the tetrapods in the same fauna with these hyneria it, it really does 当你发现四足动物与这些含肺鱼处于同一个群落时， make you think well maybe escaping from large, large predators like this hyneria was, 你不禁要想...
Oh it's completely new. By the time you get to the end of the Devonian for the very first time in Earth history 噢，它是全新的。到了泥盆纪末期，地球历史上首次出现 animals and plants are living on land in a significant, perman...
Fossil plants. By finding them alongside Devonian tetrapods Daeschler had made a vital breakthrough. 植物化石。把它们和泥盆纪四足动物放在一起，Daeschler有了一个重大的突破 He could now reconstruct for the very first time...
